Talk show host David Letterman entertained Johnny Carson on the Tonight Show in August 1991, Letterman's first visit to the show after NBC announced that Jay Leno would be replacing Carson.
Talk show host David Letterman entertained Johnny Carson on the Tonight Show in August 1991, Letterman's first visit to the show after NBC announced that Jay Leno would be replacing Carson. ASSOCIATED PRESS
Talk show host David Letterman entertained Johnny Carson on the Tonight Show in August 1991, Letterman's first visit to the show after NBC announced that Jay Leno would be replacing Carson. ASSOCIATED PRESS

Rich Copley: Saying goodbye to David Letterman, a pop culture institution

May 10, 2015 12:00 AM

UPDATED May 10, 2015 12:52 AM

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